Sen. Mark Warner: ‘I know of virtually nothing in the Steele dossier that has been disproven’

On Friday, Yahoo News Editor in Chief Daniel Klaidman and Chief Investigative Correspondent Michael Isikoff hosted a special live videotaping of "Skullduggery." Sen. Mark Warner, D-Va., vice chairman of the Senate Intelligence Committee, was a guest at the podcast taping and said, “I know of virtually nothing in the Steele dossier that has been disproven.”